lora: sensor-lorawan: Initial commit

Signed-off-by: Alistair Francis <[email protected]>

.gitignore

@@ -1,2 +1,3 @@
 build/
 .vscode/
+examples/lora/sensor-lorawan/radioConfig.h

examples/lora/sensor-lorawan/CayenneLPP.cc

@@ -0,0 +1,220 @@
+/* SPDX-License-Identifier: GPL-3.0 */
+/*
+ * The Cayenne Low Power Payload (LPP) provides a convenient and
+ * easy way to send data over LPWAN networks such as LoRaWAN. The Cayenne LPP
+ * is compliant with the payload size restriction, which can be lowered down to
+ * 11 bytes, and allows the device to send multiple sensor data at one time.
+ *
+ * CayenneLPP is also support by TTN:
+ *     https://www.thethingsindustries.com/docs/integrations/payload-formatters/cayenne/
+ *
+ * This code is direct from: https://github.com/myDevicesIoT/CayenneLPP
+ *
+ * GPL-3.0 license, see `LICENSE.GPL`
+ * See https://github.com/myDevicesIoT/CayenneLPP for license details
+ */
+
+#include "CayenneLPP.h"
+
+CayenneLPP::CayenneLPP(uint8_t size) : maxsize(size) {
+  buffer = (uint8_t*) malloc(size);
+  cursor = 0;
+}
+
+CayenneLPP::~CayenneLPP(void) {
+  free(buffer);
+}
+
+void CayenneLPP::reset(void) {
+  cursor = 0;
+}
+
+uint8_t CayenneLPP::getSize(void) {
+  return cursor;
+}
+
+uint8_t* CayenneLPP::getBuffer(void) {
+//    uint8_t[cursor] result;
+//    memcpy(result, buffer, cursor);
+//    return result;
+  return buffer;
+}
+
+uint8_t CayenneLPP::copy(uint8_t* dst) {
+  memcpy(dst, buffer, cursor);
+  return cursor;
+}
+
+uint8_t CayenneLPP::addDigitalInput(uint8_t channel, uint8_t value) {
+  if ((cursor + LPP_DIGITAL_INPUT_SIZE) > maxsize) {
+    return 0;
+  }
+  buffer[cursor++] = channel;
+  buffer[cursor++] = LPP_DIGITAL_INPUT;
+  buffer[cursor++] = value;
+
+  return cursor;
+}
+
+uint8_t CayenneLPP::addDigitalOutput(uint8_t channel, uint8_t value) {
+  if ((cursor + LPP_DIGITAL_OUTPUT_SIZE) > maxsize) {
+    return 0;
+  }
+  buffer[cursor++] = channel;
+  buffer[cursor++] = LPP_DIGITAL_OUTPUT;
+  buffer[cursor++] = value;
+
+  return cursor;
+}
+
+uint8_t CayenneLPP::addAnalogInput(uint8_t channel, float value) {
+  if ((cursor + LPP_ANALOG_INPUT_SIZE) > maxsize) {
+    return 0;
+  }
+
+  int16_t val = value * 100;
+  buffer[cursor++] = channel;
+  buffer[cursor++] = LPP_ANALOG_INPUT;
+  buffer[cursor++] = val >> 8;
+  buffer[cursor++] = val;
+
+  return cursor;
+}
+
+uint8_t CayenneLPP::addAnalogOutput(uint8_t channel, float value) {
+  if ((cursor + LPP_ANALOG_OUTPUT_SIZE) > maxsize) {
+    return 0;
+  }
+  int16_t val = value * 100;
+  buffer[cursor++] = channel;
+  buffer[cursor++] = LPP_ANALOG_OUTPUT;
+  buffer[cursor++] = val >> 8;
+  buffer[cursor++] = val;
+
+  return cursor;
+}
+
+uint8_t CayenneLPP::addLuminosity(uint8_t channel, uint16_t lux) {
+  if ((cursor + LPP_LUMINOSITY_SIZE) > maxsize) {
+    return 0;
+  }
+  buffer[cursor++] = channel;
+  buffer[cursor++] = LPP_LUMINOSITY;
+  buffer[cursor++] = lux >> 8;
+  buffer[cursor++] = lux;
+
+  return cursor;
+}
+
+uint8_t CayenneLPP::addPresence(uint8_t channel, uint8_t value) {
+  if ((cursor + LPP_PRESENCE_SIZE) > maxsize) {
+    return 0;
+  }
+  buffer[cursor++] = channel;
+  buffer[cursor++] = LPP_PRESENCE;
+  buffer[cursor++] = value;
+
+  return cursor;
+}
+
+uint8_t CayenneLPP::addTemperature(uint8_t channel, float celsius) {
+  if ((cursor + LPP_TEMPERATURE_SIZE) > maxsize) {
+    return 0;
+  }
+  int16_t val = celsius * 10;
+  buffer[cursor++] = channel;
+  buffer[cursor++] = LPP_TEMPERATURE;
+  buffer[cursor++] = val >> 8;
+  buffer[cursor++] = val;
+
+  return cursor;
+}
+
+uint8_t CayenneLPP::addRelativeHumidity(uint8_t channel, float rh) {
+  if ((cursor + LPP_RELATIVE_HUMIDITY_SIZE) > maxsize) {
+    return 0;
+  }
+  buffer[cursor++] = channel;
+  buffer[cursor++] = LPP_RELATIVE_HUMIDITY;
+  buffer[cursor++] = rh * 2;
+
+  return cursor;
+}
+
+uint8_t CayenneLPP::addAccelerometer(uint8_t channel, float x, float y, float z) {
+  if ((cursor + LPP_ACCELEROMETER_SIZE) > maxsize) {
+    return 0;
+  }
+  int16_t vx = x * 1000;
+  int16_t vy = y * 1000;
+  int16_t vz = z * 1000;
+
+  buffer[cursor++] = channel;
+  buffer[cursor++] = LPP_ACCELEROMETER;
+  buffer[cursor++] = vx >> 8;
+  buffer[cursor++] = vx;
+  buffer[cursor++] = vy >> 8;
+  buffer[cursor++] = vy;
+  buffer[cursor++] = vz >> 8;
+  buffer[cursor++] = vz;
+
+  return cursor;
+}
+
+uint8_t CayenneLPP::addBarometricPressure(uint8_t channel, float hpa) {
+  if ((cursor + LPP_BAROMETRIC_PRESSURE_SIZE) > maxsize) {
+    return 0;
+  }
+  int16_t val = hpa * 10;
+
+  buffer[cursor++] = channel;
+  buffer[cursor++] = LPP_BAROMETRIC_PRESSURE;
+  buffer[cursor++] = val >> 8;
+  buffer[cursor++] = val;
+
+  return cursor;
+}
+
+uint8_t CayenneLPP::addGyrometer(uint8_t channel, float x, float y, float z) {
+  if ((cursor + LPP_GYROMETER_SIZE) > maxsize) {
+    return 0;
+  }
+  int16_t vx = x * 100;
+  int16_t vy = y * 100;
+  int16_t vz = z * 100;
+
+  buffer[cursor++] = channel;
+  buffer[cursor++] = LPP_GYROMETER;
+  buffer[cursor++] = vx >> 8;
+  buffer[cursor++] = vx;
+  buffer[cursor++] = vy >> 8;
+  buffer[cursor++] = vy;
+  buffer[cursor++] = vz >> 8;
+  buffer[cursor++] = vz;
+
+  return cursor;
+}
+
+uint8_t CayenneLPP::addGPS(uint8_t channel, float latitude, float longitude, float meters) {
+  if ((cursor + LPP_GPS_SIZE) > maxsize) {
+    return 0;
+  }
+  int32_t lat = latitude * 10000;
+  int32_t lon = longitude * 10000;
+  int32_t alt = meters * 100;
+
+  buffer[cursor++] = channel;
+  buffer[cursor++] = LPP_GPS;
+
+  buffer[cursor++] = lat >> 16;
+  buffer[cursor++] = lat >> 8;
+  buffer[cursor++] = lat;
+  buffer[cursor++] = lon >> 16;
+  buffer[cursor++] = lon >> 8;
+  buffer[cursor++] = lon;
+  buffer[cursor++] = alt >> 16;
+  buffer[cursor++] = alt >> 8;
+  buffer[cursor++] = alt;
+
+  return cursor;
+}

examples/lora/sensor-lorawan/CayenneLPP.h

@@ -0,0 +1,85 @@
+/* SPDX-License-Identifier: GPL-3.0 */
+/*
+ * The Cayenne Low Power Payload (LPP) provides a convenient and
+ * easy way to send data over LPWAN networks such as LoRaWAN. The Cayenne LPP
+ * is compliant with the payload size restriction, which can be lowered down to
+ * 11 bytes, and allows the device to send multiple sensor data at one time.
+ *
+ * CayenneLPP is also support by TTN:
+ *     https://www.thethingsindustries.com/docs/integrations/payload-formatters/cayenne/
+ *
+ * This code is direct from: https://github.com/myDevicesIoT/CayenneLPP
+ *
+ * GPL-3.0 license, see `LICENSE.GPL`
+ * See https://github.com/myDevicesIoT/CayenneLPP for license details
+ */
+
+#ifndef _CAYENNE_LPP_H_
+#define _CAYENNE_LPP_H_
+
+#include <cstdint>
+#include <stdlib.h>
+#include <cstring>
+
+#define LPP_DIGITAL_INPUT       0       // 1 byte
+#define LPP_DIGITAL_OUTPUT      1       // 1 byte
+#define LPP_ANALOG_INPUT        2       // 2 bytes, 0.01 signed
+#define LPP_ANALOG_OUTPUT       3       // 2 bytes, 0.01 signed
+#define LPP_LUMINOSITY          101     // 2 bytes, 1 lux unsigned
+#define LPP_PRESENCE            102     // 1 byte, 1
+#define LPP_TEMPERATURE         103     // 2 bytes, 0.1°C signed
+#define LPP_RELATIVE_HUMIDITY   104     // 1 byte, 0.5% unsigned
+#define LPP_ACCELEROMETER       113     // 2 bytes per axis, 0.001G
+#define LPP_BAROMETRIC_PRESSURE 115     // 2 bytes 0.1 hPa Unsigned
+#define LPP_GYROMETER           134     // 2 bytes per axis, 0.01 °/s
+#define LPP_GPS                 136     // 3 byte lon/lat 0.0001 °, 3 bytes alt 0.01 meter
+
+
+// Data ID + Data Type + Data Size
+#define LPP_DIGITAL_INPUT_SIZE       3       // 1 byte
+#define LPP_DIGITAL_OUTPUT_SIZE      3       // 1 byte
+#define LPP_ANALOG_INPUT_SIZE        4       // 2 bytes, 0.01 signed
+#define LPP_ANALOG_OUTPUT_SIZE       4       // 2 bytes, 0.01 signed
+#define LPP_LUMINOSITY_SIZE          4       // 2 bytes, 1 lux unsigned
+#define LPP_PRESENCE_SIZE            3       // 1 byte, 1
+#define LPP_TEMPERATURE_SIZE         4       // 2 bytes, 0.1°C signed
+#define LPP_RELATIVE_HUMIDITY_SIZE   3       // 1 byte, 0.5% unsigned
+#define LPP_ACCELEROMETER_SIZE       8       // 2 bytes per axis, 0.001G
+#define LPP_BAROMETRIC_PRESSURE_SIZE 4       // 2 bytes 0.1 hPa Unsigned
+#define LPP_GYROMETER_SIZE           8       // 2 bytes per axis, 0.01 °/s
+#define LPP_GPS_SIZE                 11      // 3 byte lon/lat 0.0001 °, 3 bytes alt 0.01 meter
+
+
+class CayenneLPP {
+    public:
+        CayenneLPP(uint8_t size);
+        ~CayenneLPP();
+
+        void reset(void);
+        uint8_t getSize(void);
+        uint8_t* getBuffer(void);
+        uint8_t copy(uint8_t* buffer);
+
+        uint8_t addDigitalInput(uint8_t channel, uint8_t value);
+        uint8_t addDigitalOutput(uint8_t channel, uint8_t value);
+
+        uint8_t addAnalogInput(uint8_t channel, float value);
+        uint8_t addAnalogOutput(uint8_t channel, float value);
+
+        uint8_t addLuminosity(uint8_t channel, uint16_t lux);
+        uint8_t addPresence(uint8_t channel, uint8_t value);
+        uint8_t addTemperature(uint8_t channel, float celsius);
+        uint8_t addRelativeHumidity(uint8_t channel, float rh);
+        uint8_t addAccelerometer(uint8_t channel, float x, float y, float z);
+        uint8_t addBarometricPressure(uint8_t channel, float hpa);
+        uint8_t addGyrometer(uint8_t channel, float x, float y, float z);
+        uint8_t addGPS(uint8_t channel, float latitude, float longitude, float meters);
+
+    private:
+        uint8_t *buffer;
+        uint8_t maxsize;
+        uint8_t cursor;
+};
+
+
+#endif